.demo-down{
  margin: 20px;
}

.button-1 {
  display: inline-block;
  padding: 3px 22px;
  font-size: 22px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  outline: none;
  color: #fff;
  background-color: #4CAF50;
  border: none;
  border-radius: 15px;
  box-shadow: 0 5px #999;
}

.button-1:hover {background-color: #3e8e41}

.button-1:active {
  background-color: #3e8e41;
  box-shadow: 0 5px #666;
  transform: translateY(4px);
}

.top-nav{
  height: 60px;
  background-color: #9ea3c1;
}

.top-nav img{
  position: absolute;
}

.li-btn {
  padding: 0 0 10px 0;
}